That is, uniform quantization has been applied to residual images in order to reduce the feature dimensionality. In this paper, non-uniform quantization is proposed, developed and utilized to break the HUGO. In constructing non-uniform quantizers, a small portion of available samples from both ...
To let the loss be aware of quantization error, QAT mea- sures the loss by feeding quantized weights wq instead of w (i.e., L = f (x, y, wq ← Q(w)), where Q is a quantizer) and updates full-precision weights w using straight thr...
Summary form only given: Dithered quantization has useful properties such as producing quantization noise independent of the source and continous reconstruction at the decoder side. Dithered quantizers have traditionally been considered within their natural setting of uniform quantization framework. A uniform...
By representing the nonuniform quantizer characteristic by an infinite Fourier series, new, computationally simple, analytical expressions for predicting the harmonic and intermodulation performance of nonuniform quantizers are presented. Using these expressions nonuniform quantizer characteristics can be tailored...
In this paper, a chaos based encryption of physiological signal (EEG) is proposed using a multi-level non-uniform quantizer. The encryption performance of the proposed scheme is compared with the existing technique which uses 1-bit quantizer. It is found that the use of multi-level non-...
A digital noise-coupling technique for delta-sigma modulators with a high-resolution quantizer is presented. The proposed technique divides the outputs of ... He, L,Zhang, Y,Long, F,... - 《IEEE Transactions on Circuits & Systems II Express Briefs》 被引量: 17发表: 2014年 Quantum creation...
And the fusion performance without distortion could be achieved with proposed quantizer by only 3 bits quantization.关键词: Analytical models Bandwidth Cognitive radio Collaboration Quantization Sensors Signal to noise ratio 会议时间: 2012 被引量: 1 ...
16. An apparatus for transmitting data in a data communication system, comprising: a quantizer adapted to receive an analog input signal and operable to translate each sample value of the analog signal to a codeword; an encoder adapted to receive codewords from the quantizer and operable to map...
In constructing non-uniform quantizers, a small portion of available samples from both cover and stego images are utilized to provide needed statistics. Utilizing non-uniform quantization we can achieve better steganalytic performance than using uniform quantization under, otherwise, the same framework....
Non-uniform quantizer design for image data hiding," in Proc. IEEE Int. Conf. Image Processing, Singapore, Oct. 2004.N. Liu and K. P. Subbalakshmi, "Non-uniform quantizer design for image data hiding," in Proc. of IEEE Int. Conf. on Image Processing, ICIP, vol. 4, Singapore, ...